TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

Glossary
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
Glossary-5
deprecated address
derived from the DDL definition file. Likewise, each subsystem that has a token-
oriented programmatic interface has one definition file for DDL and one for each
programming language. Some subsystems—for instance, data communications
subsystems—have additional, shared definition files. See also SPI standard definitions,
data communications standard definitions, or EMS standard definitions.
deprecated address. An address assigned to an interface whose use is discouraged, but
not forbidden. A deprecated address should no longer be used as a source address in
new communications, but packets sent from or to deprecated addresses are delivered
as expected. A deprecated address can continue to be used as a source address in
communications where switching to a preferred address causes hardship to a specific
upper-layer activity (for example, an existing TCP connection).
Distributed Systems Management (DSM). A set of tools used to manage NonStop
systems and EXPAND networks. These tools include the VIEWPOINT console
application, the Subsystem Control Facility (SCF) for data communications
subsystems, the Subsystem Programmatic Interface (SPI), the Event Management
Service (EMS), the Distributed Name Service (DNS), and token-oriented programmatic
interfaces to the management processes for various HP subsystems.
distributor. An EMS process that distributes event messages from event logs to requesting
management applications, to Guardian console message destinations, or to a collector
on another node. See also consumer distributor. and compatibility distributor. Contrast
collector.
Domain Name Server (DNS). A method for naming resources. The basic function of the
domain name server is to provide information about network objects by answering
queries.
Domain. In the Internet, a part of the naming hierarchy. Syntactically, a domain name
consists of a sequence of names (labels) separated by periods (dots).
DSM. See Distributed Systems Management (DSM).
DUAL Mode. An operating mode of NonStop TCP/IPv6 in which the subsystem supports
both IPv4 and IPv6 addressing. See also INET6 Mode and INET Mode.
Dual stack. A node that supports both IPv4 and IPv6.
E4SA. See Ethernet 4 ServerNet adapter (E4SA).
ECHO. The name of a program used in the Internet to test the reachability of destinations by
sending them an ICMP echo request and waiting for a reply.
Exterior Gateway Protocol (EGP). The protocol used by a gateway in one autonomous
system to advise the Internet addresses of networks in that autonomous system to a
gateway in another autonomous system. Every autonomous system must use EGP to
advertise network reachability to the core gateway system.